It may be cheaper than driving, but public transit can still be pretty pricey. Pictured: Wellington, New Zealand.
Shutterstock/Milosz Maslanka
The INSIDER Summary:

If you live in a city you know how expensive transportation can be.

Not every city is the same and that goes for the prices of transportation as well.

London has the most expensive transportation. It costs $175 for a monthly ticket.

Next to housing, transportation is one of the largest recurring expenses people face. In a major metropolis, that likely means a fair amount of time packed into the subway, trolley, or bus getting a little too acquainted with your fellow city dwellers.

The good news: It's better for the environment, and, depending on where you live, it may be cheaper than owning a car.

The bad news: It can still be really expensive.

In London, the most expensive city in the world for public transportation, you'll need to shell out nearly $175 for a month of riding the Tube. In New York City, a monthly transit pass costs about $120.